Fix a false positive for no-member when accessing the _name_ …

…and ``_value_`` sunders of an Enum member value.

Refs pylint-dev/pylint#7402

ChangeLog

@@ -22,6 +22,8 @@ Release date: TBA
 * Exclude class attributes from the ``__members__`` container of an ``Enum`` class when they are
   ``nodes.AnnAssign`` nodes with no assigned value.
 
+* Fix a false positive for ``no-member`` when accessing the ``_name_`` and ``_value_`` sunders of an Enum member value.
+
   Refs pylint-dev/pylint#7402
 
 * Remove ``@cached`` and ``@cachedproperty`` decorator (just use ``@cached_property`` from the stdlib).

astroid/brain/brain_namedtuple_enum.py

@@ -443,8 +443,14 @@ class {name}({types}):
                     def value(self):
                         return {return_value}
                     @property
+                    def _value_(self):
+                        return {return_value}
+                    @property
                     def name(self):
                         return "{name}"
+                    @property
+                    def _name_(self):
+                        return "{name}"
                 """.format(
                         name=target.name,
                         types=", ".join(node.basenames),

tests/brain/test_enum.py

@@ -543,3 +543,23 @@ class MyEnum(enum.Enum):
         inferred = next(ast_node.infer())
         members_names = [const_node.value for const_node, name_obj in inferred.items]
         assert members_names == ["FOO", "BAR", "BAZ"]
+
+    def test_enum_sunder_names(self) -> None:
+        """Test that both `_name_` and `_value_` sunder names exist"""
+
+        sunder_name, sunder_value = builder.extract_node(
+            """
+        import enum
+
+
+        class MyEnum(enum.Enum):
+            APPLE = 42
+        MyEnum.APPLE._name_ #@
+        MyEnum.APPLE._value_ #@
+        """
+        )
+        inferred_name = next(sunder_name.infer())
+        assert inferred_name.value == "APPLE"
+
+        inferred_value = next(sunder_value.infer())
+        assert inferred_value.value == 42